Hi Donna, is it just the top sparay arm or both arms not rotating.If it is both arms then you will more than likely have to get the recirculation motor replaced, about £200.If it is just the top arm,look to see if the grey tube that runs up the back of the machine is loose.If it is, push back in its slot.This supplies water to the top arm that washes out the tablet from the dispenser.You will have to replace a part called a COVER about £30. Hope this helps.All the best.
FOXY
August 2008